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;;; oni-eshell-prompt.el --- Oni's eshell prompt functions -*- lexical-binding: t; -*-
;; Copyright (C) 2015 Tom Willemse
;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords:
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; These are the functions I use to provide my eshell prompt.
;; You can use it by adding `oni-eshell-set-prompt' to the
;; `eshell-first-time-mode-hook'.
;;; Code:
(require 'em-dirs)
(require 'em-prompt)
(defvar oni:eshell-prompt-regexp "^[~/].* > "
"A regular expression that matches the prompt.")
(defun oni:shorten-dir (dir)
"Shorten a directory, (almost) like fish does it."
(while (string-match "\\(\\.?[^./]\\)[^/]+/" dir)
(setq dir (replace-match "\\1/" nil nil dir)))
dir)
(defun oni:eshell-prompt ()
"Show a pretty shell prompt."
(concat (if (not (looking-back "\n" nil)) "\n")
(oni:shorten-dir (abbreviate-file-name (eshell/pwd)))
" > "))
;;;###autoload
(defun oni-eshell-set-prompt ()
"Prepare eshell for using the prompt."
(setq eshell-prompt-function #'oni:eshell-prompt
eshell-prompt-regexp oni:eshell-prompt-regexp))
(provide 'oni-eshell-prompt)
;;; oni-eshell-prompt.el ends here
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